Door-bolt.



No. 69!,870. Patented lab. 28, I902. F. FILLING.

DOOR BOLT.

(No Model.)

' citizen of the United States, residing at Wash- NITED TATES FREDERICKFILLING, OF \VASHINGTON, DISTRICT OF COLUMBIA.

DOOR- BOLT.

$PECIFICATION forming part of Letters Patent N0.*691,8 70, dated.January 28, 1902.

Application filed October 8, 1901.

T0 aZZ wit/mt it may con/06172,.-

Be it known that I, FREDERICK FILLING, a

ington, in the District of Columbia, have invented a certain new anduseful Improvement in Door-Bolts, of which the following is a full,clear, and exact description.

The object of this invention is to provide a door-bolt that may bereadily applied, repaired, and replaced by means of self-containedfasteners.

In carrying out my invention I use a baseplate for the bolt proper and abase-plate for the keeper, and I mount the bolt in bearings inconnection with the plate and provide a keeper in the form of an eye andsupply the bearings and eye with screws, which are passed throughsuitable openings in the plates and serve the double purpose of securingthe plates and themselves in position, and in this Way the componentparts of a bolt may be applied without the use of extraneous screws orother fastenings nota part of the mechanism itself.

Having thus stated the principle of my invention, I will proceed now -toexplain the best mode in which I have contemplated applying thatprinciple and then will particularly point out and distinctly claim thepart, improvement, or combination which I claim as my invention.

i In the accompanying drawings, illustrating myinvention, in the severalfigures of which like parts are similarly designated, Figure 1 is anelevation of the bolt appliedto a door. Fig. 2 is a longitudinal sectionwith the bolt itself in elevation. Fig. 3 shows in perspective thecomponent parts of the bolt.

Ordinarily a door-bolt of the class to which my invention particularlybelongs is composed of a base-plate upon which three inbular bearin gsare mounted in alinement, the middle bearing usually being shorter thanthe end bearings and slit longitudinally to form a catch for cooperationwith a knob or handle on the bolt proper forlocking the said bolt ineither the locked or unlocked position. The keeper likewise is composedof ,a plate upon which a single tubular bearing is mounted. These twoparts-namely, the plate with Serial No. 77,995. (No model.)

the three bearings for the bolt itself and the keeper-plateare in theordinary form of bolt secured to a door or other object by means ofextraneous screws passed through countersunk holes in the plates, andcommonly there are six screws for the plate carrying the bolt and twoscrews for the plate carrying the keeper. The application therefore ofthe bolt is attended with some labor and considerable consumption oftime, and there are no facilities for repairing in case of damage of anyof the parts.

I In the presentinvention I dispense entirely with extraneousfastenings, and to this end use a bolt-plate a, which may have a seriesof slots or holes or a continuous slot b. The keeper-plate 0 also has ahole d. The bolt itself (designated 2) may be a cylinder of metal, asusual, and provided with an operating knob or handle f. Threebearing-pieces, practically cylindrical tubes, are employed to receivethe bolt and connect it with the plate a, and the end bearings g g maybe substantially alike, while the intermediate bearing h is slitlongitudinally, as at 1}, for the passage through it and to one side orthe other of it of the knob or handlefof the bolt, as is usual in thisclass of bolts. The keeper j is also a cylindrical tube, as usual. Myinvention consists in making these several tubular portions g, h, and jseparate from the plates on and c and providing each of them in anysuitable manner with a screw-point Z m.

In assembling the bolt upon a door or other object the bolt-plate a isplaced in the desired position, and then the screw-bearing pieces 9 and7b have their screw-points passed through the slot or slots 1) anddriven into the wood of the door until these several bearing-pieces bindupon the plate sufficiently to hold it in place and themselves arebrought into alinement. The bolt is then applied in these bearing-piecesand afterward the knob fput in position in the bolt, so that the knobwill occupy a place between the bearings g g and be capable ofcooperation with the slitted hearing h for locking the bolt in eitherthe locked or unlocked position. The keeper-plate c is then 'alined withthe plate a, and it is secured in position by means of the screw of thekeeper j, which screw passes through the opening 02 of the plate andinto the Wood of the doorframe. Thus is obviated the necessity for theuse of any fastening devices not an integral or self-contained part ofthe bolt.

Obviously should any of the bearing-pieces g, h, orj become damaged theymay be removed and replaced without the necessity of furnishing anentirely new bolt.

I do not limit myinvention to the material of which the parts are madeand merely suggest that they may be made from the commonest or mostexpensive kind of stock.

It is Within my invention to dispense with the bolt-plate and thekeeper-plate, either or both; but ordinarily these will be employed.

By the use of the terms self-contained and self-fastening as applied tomy boltI Wish to be understood as meaningabolt whose casing or bearingsand keeper carry their own fastening devices or whose fastening devicesare part and parcel of the casing, bearings, and keeper as opposed to abolt which requires extraneous fastenings.

What I claim is 1. A self-fastening bolt, comprising a bolt proper, abolt-plate, a keeper-plate, bearings for the bolt, and an eye for thekeeper, the several bearings and the eye being provided with permanentscrew-points by means of which the respective plates and the bearingsand eye are secured in position, substantially as described.

2. A door-bolt, in which the bearings for the bolt are made withintegral attaching screwpoints, substantially as described.

3. A door-bolt, comprising a bolt proper, and a series of tubes providedwith permanent attaching screw-points, and constituting bearings andkeeper for the bolt, substantially as described.

In testimony whereof I have hereunto set my hand this 7th day ofOctober, A. D. 1901.

FREDERICK FILLING.

Witnesses:

WM. H. FINCKEL, E. A. FINoKEL.

